Apparatus for positioning building board



April 13, 1965 1.. G. LOVE 3,178,038

APPARATUS FOR POSITIONING BUILDING BOARD Filed Nov. 2, 1961 5 Sheets-Sheet l ga /6d 67-" J 1 j E 4': 42 Z6 1 (T 5 I 1 it 4! f .97 4 6 .95 27 A g 0 1 gr 7 1: I I y \9/ 3; \37 L47 a, W IAVENTOR. 22 EU 1551/5 6. 101

F J BY A TTOE/VEK? L. G. LOVE APPARATUS FOR POSITIONING BUILDING BOARD 5 Sheets-Sheet 2 April 13, 1965 Filed NOV. 2, 1961 April 13, 1965 Filed Nov. 2, 1961 APPARATUS FOR POSITIONING BUILDING BOARD L. G. LOVE 5 Sheets-Sheet 5 INVENTOR. 4551/5 6, My;

.4770/P/VEV5 April 13, 1965 L. G. LOVE 3,178,038

APPARATUS FOR POSITIONING BUILDING BOARD Filed NOV. 2, 1961 5 Sheets-Sheet 4 1x7 ,zaa f '59 6 w 13 gm! V {:7 a :.:::z:

INVENTOR. 15505 6. 16 1 5 April 13, 1965 1.. G. LOVE 3,178,038

7 APPARATUS FOR POSITIONING BUILDING BOARD Filed Nov. 2, 1961 5 Sheets$heet 5 INVENTOR.

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4 TTOP/WFKS United States Patent 0 3,178,038 APPARATUS FUR PGSITIONENG BUILDING BOARD Leslie G. Love, Rte. 1, Box 70, Cranneil, Calif. Filed Nov. 2, 1961, Ser. No. 149,607 6 Claims. (Cl. 214-1) This invention relates to apparatus for positioning building board and more particularly to apparatus for positioning building board for nailing or otherwise securing building board to the walls and ceilings during construction of a building.

This application is a continuation-in-part of my application Serial No. 48,185, tiled August 8, 1960, now abandoned; Serial No. 46,176 filed July 29, 1960, now abandoned; and Serial No. 47,088, filed August 2, 1960, now abandoned.

In the placement of building board such as plasterboard without the aid of positioning apparatus, it is often necessary to utilize at least two men in positioning and holding such plaster board in place while it is being nailed. This is primarily due to the fact that building boards are of such large sizes such as 4 X 8, 4 x 12 and 4 X 16 so that it is difficult for one man to handle the sheets of material and also to properly position the same so that it can be nailed in place. There is, therefore, a need for apparatus which willmake it possible for one man to accomplish the positioning and nailing or securing of the plaster board in place. in general, it is an object of the present invention to provide apparatus for the positioning of building board so that building board can be positioned and secured by one man.

Another object of the invention is to provide apparatus of the above character which can be readily disassembled and moved from place to place.

Another object of the invention is to provide apparatus of the above character which is particularly adapted for positioning the building board either on the side walls or on the ceiling.

Another object of the invention is to provide apparatus ofthe above-character which makes it possible to position the building board very accurately .so that it can be nailed in place while it is being held in place by the apparatus.

Another object of the invention is to provide apparatus of the above character in which the means utilized for supporting the building board does not interfere with the nailing of the building'board into place.

Another object of the invention is to provide apparatus of the above character in which separate frameworks are utilized for'positioning the building board on the side w'alls'and on the ceiling.

. Another object of the invention is to provide apparatus of the above character which is utilized for positioning the building board against the side walls in which the top edge of the building board can be readily released from the apparatus in any position of the building board.

Another object of the invention is to provide apparatus of the above character for use in positioning building board on the ceiling in which the building board is automatically centered over the supporting standard or mast as the building board is raised into place.

Another object of the invention is to provide apparatus of'the above character for positioning building board on the ceiling which can be readily tilted to avoid objects on the Walls.

Another object of the invention is to provide apparatus of the above character which utilizes the same mast and dolly for either ceiling positioning or side wall positioning apparatus.

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Another object of the invention is to provide apparatus of the above character which can be readily changed from apparatus for positioning building board on the side walls to apparatus for positioning building board on the ceiling.

Another object of the invention is to provide apparatus of the above character which can be expeditiouslyand economically manufactured.

Additional objects and features of the invention will appear from the following description in which the pre ferred embodiments are set forth in detail in conjunction with the accompanying drawings.

Referring to the drawings:

FZGURE l is a side elevational view of my apparatus for positioning building board incorporating my invention and particularly shows the type of apparatus used for positioning building board on the ceiling with a sheet of building board mounted thereon.

FIGURE 2 is a front elevational view of the apparatus shown in FIGURE 1 without the sheet of building board.

FIGURE 3 is a top plan view or" the dolly utilized'in my apparatus.

FEGURE 4 is an enlarged view, partially in cross-section, showing a portion of the apparatus shown in FIG URES l and 2.

FIGURE 5 is an enlarged detail view taken along the line 5-5 of FlGURE 2.

FIGURE 6 is an enlarged detail view of the latch means utilized. 7 p

FIGURE 7 is an enlarged detail view, partially in crosssection, showing the means permitting tilting of the framework. I

FIGURE 8 is a schematic illustration showing the reeving of the winch line and how the winch line is used to raise and lower the telescoping extension in the mast. FIGURE 9 is a ide elevational view of another embodiment of my apparatus for positioning building board incorporating my invention and in particular shows apparatus for positioning building board in the side walls of a building with a sheet of building board mounted thereon. A

FIGURE 10 is a front elevational view of the apparatus shown in FIGURE 9 without the sheet of building board.

FIGURE 11 is an enlarged detail view of the releasemechanism for releasing the top edge of a board.

FIGURE 12 is an enlarged detail view showing the manner in which the carriage is'slidably mounted in the framework. 7

FIGURE 13 is a schematic illustration showing the reeving arrangements utilized in the apparatus as shown inFIGURES 9 and 10.

In general, my apparatus for positioning building board consists of a dolly base which is provided with casters to facilitate movement of the same. A vertical standard or mast is mounted on the base and is provided witha telescoping extension. Winch means is mounted on the standard or mast and is provided with a winch line for raising and lowering the telescoping extension. Two types of frameworks'are adapted to be associated with the dolly bodiment of my apparatus for positioning building board consists of a dolly 11 upon which is mounted a standard or mast 12. A framework 13 is mounted on the mast 12.

V The dolly 13 consists of a substantially triangular frame 14 as shown in 3 of the drawings. The frame 14 consists of a front frame member 16 and inclined side frame members 17 and 18 and a rear horizontal plate 21 l A slidably mountedwithin the mast 12; A pulley bracket Mean's is providedon the dolly 11 for supporting the standard or mast 12 and consists of a fixed semi-cylindrical jaw 31 whichhas its lower extremity fixed to the frame 14. The fixed jaw 31 is aflixed to a pair of vertical angle members 32 which are secured to a pair 'of parallel spaced longitudinally extending members 33 which form a part of the dolly 11. These members 33 are secured to the as shown. Another semi-cylindrical jaw 36 which is movable and adapted to coact with the fixed jaw 31 has its lower extremity hinged by a hinge 37 to a cross member, 38-secured to the longitudinally extending members An overcenter locking clamp 41 is provided for locking the mast 12 between the movable jaw 36 and fixed jaw 31. Theclamps 41 consist of a link 42 which has one end pivotally connected to the movable jaw 36 by a "pin 43 and which has the other end pivotally connected to a U-shaped clamping member 44 by a pin 46. The clamp-- ing member 44 is pivotally connected to an upstanding lug 47 by a pin 48. This over-center locking clamp 41 is'descri'bed in detail in my United States: Letters Patent No. 2,896,293.- As can be seen from FIGURE 1 of the drawings, the over-center locking clamp 41 can be moved from a lockingposition shown in solid lines in FIGURE 1: to an unlocked position shown in dashed lines in FIG:

. URE 1 to permit ready insertion and removal of the" mast or standard'12. V I

Suitable additional reinforcing members are provided as apart of the dolly 11 and, for example, can consist of downwardly extending reinforcing members 51 which are secured; tothe fixed jaw 31 and the frame members 16,

31 and 36 and is retained therein in a substantially vertical position.

A winch 54 is mounted adjacent the upper end of the I mast 12 and may be of any suitable type such as a type 252 manufactured' by Fultonf The winch is provided with an operating handle 55 which drives a winch drum 56. A winch line 57 is adapted to, be unwound and wound on the drum 56 provided in the winch.- Means is provided (not shown) for arresting or retaining the winch drum 56 and the winchline 57 in a predetermined position. The winch line 57 travels over a pulley 59 which is rotatably mounted'upon a pin- 61 afiEixed in a pair of side plates 62. The side plates 62 are aflixed to a top mounting plate 63 which is afiixed to a top casting 64 mounted 67 is afiixed to the bottom end of the extension 66 and serves to rotatably mount a pulley 68 on which the winch line 57 travels. The free end of the Winch line i'ssecured to the top base plate 63 as shown at 69. A guide block 71 of suitable material such as wood is affixed to the lower end of the bracket 67 and guides the pulley 68 during its'vertical movement within the mast to thereby V prevent it from coming into contact with the inner side a wall of the mast. An shown in FIGURE 1 of the drawings, a guard 72 is provided over the pulley 59 for retaining the winch line 57'on the pulley. I

The portion of my apparatus thus far described is used inthe apparatus for positioning'building board so that it can be secured to the ceiling shown in FIGURES 1-8 and also in the apparatus shown inFIGURES 9-13 which is utilized 'for positioning the building board so thatit can be secured to the side wall of the building.

The. framework 13 for positioning building board in the; ceiling is mounted upon the extension 66 of the mast 12. The framework 13 consists of a pair of spaced parallel frame members 74 and a pair of longitudinally extending frame'members 76 which are secured to the end of the frame members'74 to thereby provide a generally rectangular framework. A pair of elongate spaced parallel longitudinal members 78 of suitable material such as wood are secured to the members 76 'by suitable means such as carriage bolts 79. V The members 78 have a substantial length and are preferably nearly as-long as the shortest sheet of building board to be placed by the'ap, paratus. Thus, if building board 8 ft. inlength is the shortest length to be used, the members 78 can have'a length of approximately 6 or 7 ft.

within the upper end of the mast 12. The casting 64.

can'be secured to the top end of the mast 12 in any suit-' able manner such as by a shrinkfit. .The mounting plate 63 is secured to the casting 64 by suitable means such as the bolts 65 shown. The bolts 65 are put in place before the upper end of the mast 12 is shrunk onto the casting 64. V p p v A cylindrical telescopingsection or extension' 66is V The channel typeframe members 74 are affixed to" L- shaped brackets 81 and 82 by suitable means such as welding and are spaced approximately equi-distantfrom the ends of the frame members 74. The L-shaped members 81 and 82 are pivotally mounted upon a laterally extendingframe member 83 by suitable means such as cap screws 84. A bracket 86'is' provided equi-distant the ends of the frame "member 83 and ispivotally connected by a pin 87 to a shoe 8-8.- .The shoe 88 is provided with a downwardly extending pin 89 which is adapted to seat within the upper end of the tubular telescoping extension 66 provided as a part of the mast 12. The'shoe 83 is formed in such a manner that it is adapted to engage the longitudinally extending frame member 83 and is pro vided with an inclined surface 91 so that the entire framework 13 can be tilted to an inclined position shown in dot and dash lines in FIGURE 2 for a purpose hereinafter In the inclined position, the lower edge of 7 described. the frame: member 83 engages the inclined surface 91 provided on the shoe 88 as shown particularly in FIGURE 7.

From the construction shown, it can be seen that in addition to'the framework being capable of being tilted about an axis which is parallel to the longitudinal axis of the framework 13, it can be tilted about an axis which is perpendicular to the longitudinal axis of the framework.

Means is provided for locking the framework 13 in the substantially horizontal position shown in FIGURE 2. It

consists of a spring actuated latch 94 which is pivotally mounted upon a pin 96 fixed in a lug 97 mounted on the" L-shaped member 81. fYieldable means in the formof a spring 98 :is provided for urging the latch 94 into an engaging position with a notch (not shown) provided in a ;member 101 secured to'the frame member 83 by a bracket 102. The framework 13 can be readily released from this'hori'zontal position by operating of the latch 94 to work 13 is in a substantially vertical position as shown in FIGURE 4, 8uch means consists of a pair of spaced rail members 104- which extend in a substantially horizontal plane. The rail members 134 are supported by ver tical members 1% which are secured to a transverse hon zontal member 167. The transverse horizontal member 197 is secured to an arm 1% which is pivotally secured to the channel frame member 83 by a hinge 169. It will be noted, as shown in FIGURE 5, that the center line 111 for the pivoting of the member 108 is spaced from the center line 112 about which the framework 13 pivots. Cooperative means is provided on the means for supporting the board and the framework 13 so that the means supporting the board follows the framework 13 as it is moved from the vertical position. It consists of a pin 114 mounted on the channel member it between the ends thereof and which is adapted to engage and slidably mount in a hole 116 provided in the longitudinally extending members 76 and 78 as shown particularly in FIGURE 4.

Operation and use of my apparatus for positioning building board shown in FIGURE l-9 may now be briefly described as follows. Let it be assumed that the framework 13 is in the position shown in FIGURE 4 and that a building board 117 such as a sheet of plasterboard has been loaded onto or lifted onto the rails 164 provided on the support mechanism 103 which is in engagement with the framework 13 as shown in FIGURE 4. Normally, the building board can be readily lifted onto the supporting means 163 by one man by lifting the board sideways with one hand on the lower edge of the board and the other hand on the upper edge of the board and then positioning the board so that the lower hand passes between the two rails 104. The board 117 should be positioned on the support means 1&3 in such a manner so that its center is slightly to the left of the arm 1% to prevent tilting of the board after it has been raised to a horizontal position as hereinafter described.

As soon as the board has been positioned on the support means 1%, the lower edge of the board is tilted upwardly to thereby tilt the support means 1% and the framework 113 upwardly so that the board shifts gradually from a substantially vertical position to a horizontal position. During the time that the board is being lifted to the horizontal position, the pin 114 gradually retracts from the hole 116 because of the difference in spacing between the center lines 111 and 112. Thus, as the board 117 is raised, the arm 1% gradually pushes the pin 114 out of the opening 1M until it automatically becomes disengaged or released from the framework 13 and drops downwardly to its normal substantially vertical position shown in FIGURE 4. It will be noted that the pin 114 is dimensioned in such a manner that it does not automatically release until the framework 13 has been moved into a position so that substantially all of the weight of the building board is carried by the support members or bars 78, as for example an angle of 80 from the vertical. It also should be pointed out that the support means 103 serves as an automatic centering mechanism in that it serves to position boards of conventional width so that the centerline or longitudinal axis of the board substantially overlies the pin 89 provided as a part of the framework 13. This is advantageous because the board will always be on center and cannot possibly cause the apparatus to tip over.

As soon as the board 117 reaches a substantially horizontal position, it is latched into this position by the latch 94 engaging the notch in the member 1G1. The building board will not tip about an axis perpendicular to the longitudinal axis of the frame 13, because as explained previously, the board has been positioned 'on'the framework in such a manner that its Weight is slightly to the left of the center with respect to the lateral axis of the building board. 7

As soon as the building board has been raised to the horizontal position, the building board can be raised to the desired height by operating the winch 54. It will be noted that the reeving for the winch line 57 is such that a mechanical advantage of two is obtained. For every foot of cable reeled in by the winch, the board will be raised one-half foot. Raising is continued until the board is in the proper position. If desired, it may be preferable to generally position the building board below the desired location by shifting the dolly 14 by use of the handle 26. Then, after the building board has been raised to within an inch or so of the desired position, the dolly can be finally positioned, after which the building board can be raised into the exact posit-ion desired. The Winch 54 will hold the board in this position.

It will be noted that the construction of my apparatus is such that there are no obstructions now holding the side edges board and therefore the board can be moved into its exact position adjacent other boards which already have been secured or into a corner. After this has been accomplished, the board can be nailed in place. the board has been nailed in place, the winch can be released and the framework loweredto the position shown in FIGURE 1. The frame 13 can then be tipped to the vertical position by releasing the latch 94. At the time that the framework 13 is moved out of the horizontal po sition, the support means 1% is brought up into engagement with the framework 13 so that as the framework 13 is lowered, the pin 114 comes into engagement with the hole 116 so that the apparatus will be ready to receive the next piece of building board.

If it is desired to position a piece of building board in a corner or similar location and it is desired to keep the building board out of engagement with small objects hanging on the wall, the building board can be tilted so that the member $3 engages the surface 91 of the shoe 83 to clear the objects. Thereafter, after the object has been cleared, the board can be permitted to return to its normal horizontal position.

in addition to providing apparatus which can be operated by one man, I have provided apparatus which can be readily disassembled and transported from one location to another. Thus, the framework lii can be removed from the mast 12 merely by removing the pin 89 from the upper end of the extension an. The mast thereafter can be removed by opening the clamp 41 to remove the most from between the semi-cylindrical members 31 and 36. Thereafter, the handle 26 can be removed. These parts can be readily handled by one man and moved to an other location in a suitable vehicle such as a pick-up. The apparatus can also be readily assembled in the same manner in which it has been disassembled.

Another embodiment of my apparatus for positioning building board is shown in FIGURES 9-13 and is of the type which is particularly adapted for positioning building board so that it can be nailed to the walls of a building. As can be seen from the drawings, the same dolly 2.1 and mast 12 are utilized in this embodiment of my invention. However, in place of the framework 13, a framework 12,} is mounted upon the dolly 1'1 and secured to the mast as shown. The framework 121 consists of a pair of spaced parallel vertical =f-rame'mem-bers 122 of the channel type; The framework .121 also consists of lower, intermediate and upper cross frame members 123, 124 and 126 respectively, which are secured to the vertical frame members 1122 'to provide a unitary framework having a substantially rectangular configuration -as shown in the drawings. The framework 121 also consists of a pair of diagonal reinforcing braces 128 extending upwardly from the cross frame member 1 26 and secured to the vertical frame members 122,. e

As shown in the drawings, the cross frame member 123 extends beyond the vertical frame members 12-2. and is adapted to engage inverted V-shaped members 131 provided on the dolly 11 and serves to urge the lower extremity of the framework 121 into engagement with the frame member 16 of the dolly to thereby prevent the lower extremity of the framework from shifting "or by a foot and on a pin 133 provided on the cross member 1123 of the tframeworklll. 'The latch is adapted to engage a pin 134 provided on the frame member 16 of the dolly 11. A stop pin 1 36 is provided to prevent the latch 132 from travelling beyond a predetermined position. sures that when the frame 121 is being lowered into position, the latch 132 will always be in a position so that it can :be 'cammed out of the way of the pin 134 and then drop into engagement with the pin 1'34 automatically. To release the latch, it is merely necessary to move the latch 132 out of engagement with the pin 134 by a hand dolly. I

Means is provided :for retaining the upper end of the framework 121 in a predetermined position and consists of a bracket 138 which is secured to the cross member 136. The bracket v138 is provided with a hole (not shown) so that the bracket can drop onto the head 139 of a bolt-141 provided in the plate 63 of the mast 12."

Means is provided for supporting hte building board 4 on the framework 121 and consists of a vertical carriage 146 which is slidably mounted in the framework 121 for vertical movement therein. The carriage 146 consists of a pair of vertically spaced parallel frame members 147 and spaced upper and lower cross frame members 148 and 149 which are secured to the vertical frame members 147 to providea substantially rectangular carriage. will be noted that the cross frame members 123, 124 and 126 are mounted behind the vertical frame members 122 of the framework 121 as viewed in FIGURE 10, whereas the cross frame members 148 and 149 of the carriage 146 are mounted in front of the vertical frame members 147. This permits the carriage 146 to travel within the framework 121 as shown in the drawings. To facilitate provided with a pair of rollers 151 on opposite sides of the'carriage on the upper and lower ends of the vertical then lift the framework 121 off of the cs one of the arms is provided with an extension 154a which is'pivotally connected to a link 161 by a pin 162.

The link 161'is also pivotally connected to one end of an L-shaped lever arm 163 by a pin 164. The lever arm 163 is pivotally connected to an extension 166 affixed to a'vertical member 168 afiixed to'the cross members 148 and 149. The lever arm 1 63 is pivotally connected to the extension 166 by a pin 169. It will be noted that the lever arm is formed in such a manner that the lever arm 163 extends beyond the framework 121 so that it can be readily grasped for operating-the supporting means for This enthe building board for shifting it laterally as hereinafter described. N e

Means is provided on the upper end of the vertical memher 168 for grasping or engaging the top edge of the building board 154 asshown in the drawing and consists of a U-shaped member 171 which is afiixed to a bar172 slidably mounted within the channel formed by the vertical member 168 as shown particularly in FIGURE 11.

The bar 172 is retained within the channel by a cross 7 piece 173 which is secured across the channel by suitable means such as welding. Thus, it can be seen that the bar 1 this vertical travel in the carriage, the framework 146 is frame members 147 as shown in the drawings. The roll- V ers 151 are secured to the frame members 147 and are adapted to ride in the channels provided in the vertical frame members 122.

Means is provided on the carriage 146 for supporting the building board and consists of a pair of horizontal spaced right angle rails 153 which are adapted to engage the lower edge of a building board 154 as shown in FIG- URE 9 of the drawings. The spaced horizontal rails 153 are fixed to arms 154. The arms 154 have rollers ,156 mounted thereon which travel upon the ,cross member 148 as shown particularly in FIGURES 10 and 12 of the drawings. As can be seen particularly from FIGURE 12, the rollers 156 are rotatably mounted upon bolts 157 which extend through the arms 154' and U-shaped 172 is slidably mounted within the channel so that the U-shaped member 171 can be raised and lowered as shown particularly in FIGURE 11. Means is provided for raising and lowering this U-shaped member 171 and consists of a lever arm 174 which is pivotally mounted on an extension 176 secured to the member 168. The leverarm is pivotally connected to the extension 176 by a pin 178. The lever arm is also pivotally connected to the lower end of the'bar 172 by a'pin 179.

Means is provided for operating the lever arm 174 in any position of the vertical carriage and consists of a suitable elongate flexible element such as a cord or cable 131 which has one end secured to the lever arm 174 as shown in the drawingand the other endsecured .to the cross frame member 148. It. will be noted that the lever arm 174 is pivited in such a manner that the weight of the bar 172 and the U-shaped member 171 is such that the U-shaped member 171 drops downwardly. by force of gravity. Thecord' 181 serves as means for raising the U-shaped member 171 out of this position'against the force of gravity. If desired yieldable means in the form of a spring (not shown) can be used to urge the member 171 downwardly. 1

Stop means is provided for limiting the uppermost and lowermost positions of travel of the carriage 146 and consists of bolts 182 which are provided in theupper end of 186 consists of a cross member 187 which has a bracket I 188 secured theretoequi-distant the ends thereof.

The bracket 188 is provided with a downwardly extending pin 189 which is adapted to seat within the telescoping extension 66 of the mast 12 as shown in FIGURE 9. A

pair of pulleys 191 are rotatably mounted on opposite ends of the cross member 186 in pulley support brackets 192 secured to the ends of the cross member. Guards 193 are also mounted on'the ends of the cross member and serve to prevent 'a suitable flexible elongate member such as a cable 194 reeved over the pulleys 1 91 from jumping out of the pulleys; One end of the flexible elongate member, or cable 194is releasably secured to a hook 196 which is'affixed to the vertical member 168 as shown particularly in FIGURE 10 of the drawings. The other end of the cable is releasably fastened to another book 197 which is carried by a V-shaped bracket 198. The

9 bracket 198 is pivotally mounted on ears 199 provided on the base plate 48 of the dolly 11 by pins 291.

The cable 194 and the cable 57 are provided in the winch have been designed so they are approximately the same length. This makes it unnecessary to have more than one replacement cable available.

Operation and use of the apparatus shown in FIGURES 9-13 may now be briefly described as follows. Let it be assumed that it is desired to position a building board on the side Wall of a building. The apparatus is first placed in the position shown in FlGURE l0. Thereafter, the workmen may lift the building board 15 -3- into position by lowering the lower edge of the building board onto the rails 153 as shown in the drawings. Thereafter, the upper edge of the board can be tilted rearwardly, while at the same time utilizing the other hand to engage the cable 131 to raise the U-shaped member 171. As soon as the U-shaped member 171 has been raised, the board can be allowed to drop rearwardly into engagement with the member 168. leased to permit the U-shaped member 71 to drop over the top edge of the board.

After this has been accomplished, the dolly lli carrying the building board can be shifted into the proper position by use of the T-shaped handle 26 provided onto the dolly. After the dolly has been positioned so that the building board is adjacent the wall, the building board 154 is raised to the desired position by'operation of the winch 54.

The final lateral positioning of the board can be accompiished by operating the lever 163 to shift the board laterally in one direction or another by causing the rollers 156 to travel laterally of the cross member 148. This makes it unnecessary to exactly position the dolly laterally. The final vertical positioning is obtained by operation of the winch 54. After the board has been positioned laterally and vertically, the upper edge of the board 154 is released by operating the cable 181 to raise the U-shaped member 171 out of engagement with the upper edge of the board and then permitting it to drop so that it is below the upper edge of the board so as to not interfere with the placement of the board.

Thereafter, the upper edge of the board is tipped forwardly into engagement with the studs forming the side wall of the building. The upper edge of the building board is then nailed or secured in place in a suitable manner. After the upper edge of the board has been nailed into place, the winch 54 is released to lower the carriage 1% to thereby lower the rails 153 out of engagement with the lower edge of the board. Thereafter, the apparatus is moved out or" the way by use of the handle 26. Thereafter, the lower edge and sides of the building board can be nailed into place.

Thereafter, additional building boards can be put in place in the same manner merely by lowering the vertical carriage 146 and then placing another building board on the vertical carriage as hereinbefore described. It should be noted that the rails 153 are spaced apart which permits the operator to grasp the board in the center thereof and to position the board on the carriage so that the lowermost hand carrying the board can be placed between the rails 153.

As with the apparatus previously described for placing building board on the ceiling, the apparatus for placing building board on the walls of a building can be readily disassembled for transportation from one job to another. Thus, is disassembling the apparatus, the cable E4 is first disconnected from the hook 1%7 after which the cable is disconnected from the hook 196. Prior to disconnecting the cable, it is desirable to lower the carriage 145 to its lowermost position so that it will be unnecessary to lower the same by hand. After the cable 1% has been disconnected, the cross member 187 can be lifted from the telescoping extension 66 of the mast. Thereafter, the framework 121 can be removed from the dolly and the Thereafter, the cable 181 can be re- V lb" mast by operating the latch 132 to release the pin 134.

The framework 121 and the carriage 146 is removed as a' unitary assembly and can be readily transported in this manner. Thereafter, the mast 12 and the handle 26 can be removed in a manner similar to that hereinbefore described.

Thus, it can be seen that my apparatus is such that it can be readily transported from one location to another by one man. Also, it is apparent that the dolly i1 and the mast 12 are constructed in such a manner that the framework for either positioning a building board on the side wall of the building or on the ceiling of a building can be readily mounted upon the dolly with very little effort.

It is apparent from the foregoing that I have provided a new and improved apparatus for positioning building board. The apparatus can be readily modified so that it can be utilized for either positioning building board on the ceiling or on the side walls of the building. The apparatus is also constructed in such a manner that it can be readily moved about from one place to another by one man. The apparatus is also constructed so that it makes it possible for one man to position and nail in place large sheets of building board without any difiiculty. The apparatus is constructed so that it is easy to operate and is relatively foolproof.

I claim:

1. In apparatus for positioning building board, a dolly, a vertical mast mounted on the dolly, a telescoping extension slidably mounted for vertical movement in said mast, means carried by the mast for raising and lowering the telescoping extension, a substantially rectangular framework forming a first board supporting means and pivotally mounted with respect to said telescoping extension and carried at the upper end thereof for movement between a substantially vertical position and a substantially horizontal position, a second building board supporting means having an arm pivotally connected to the telescoping extension at a point spaced from the axis on which the 'ramework is pivotally mounted, cooperative engaging means carried by the framework and the second board supporting means so that the second board supporting means is carried with the framework as the framework is moved from a substantially vertical position to a substantially horizontal position to thereby support the board until the weight of the board is transferred to the framework, the cooperative means being formed so that it automatically releases at a point before the framework reaches a horizontal position, and latch means for retaining said framework in a substantially horizontal position.

2. Apparatus as in claim 1 together with means for permitting tilting of said framework at an angle which is at right angles to the axis of movement of the framework between substantially vertical and substantially horizonal positions.

3. Apparatus as in claim 1 wherein the cooperative engaging means consists of a member having a hole therein and a pin slidably mounted in the hole.

4. Apparatus as in claim 1 wherein said second building board supporting means includes a pair of spaced rails having board receiving portions.

5. In apparatus for positioning building board, a dolly, a vertical mast mounted on the dolly, a winch mounted on the mast, the winch having a winch drum and a winch line adapted to be wound on and unwound from the winch drum, a telescoping extension slidably mounted in said mast for vertical movement in the mast, means for connecting the telescoping extension to the winch line so that as the winch line is wound and unwound, the extension is raised and lowered, a framework forming a first board supporting means pivotally mounted on said extension for tilting movement with respect to the mast between substantially vertical and substantially horizontal positions, and second board supporting means, means associated with said framework and adapted to engage the lower edge of the building board and to support the building board on the framework when the framework is in a substantially vertical position and during the time the building board and the framework are moved from a substantially vertical to a substantially horizontal position, said second board supporting means and said framework including cooperative engaging means which is arranged so that the second board supporting means is carried with the first board supporting means until the firstboard supporting means is in a substantially horizontal position and which automatically releases at a point before the tion.

6. Apparatus as in claim 5 together with means for first board supporting means reaches a horizontal posicausing said means supporting the building board to 15 automatically release and move away from, andv expose both faces of the board when substantially all the weight 7 '12 of the building board has been transferred from the supportingmeans to'the framework.

References (lite d by the Examiner UNITED STATES PATENTS. 7

1,725,329 8/29 Blandford. 2,137,743 '11/38 Strassrnan 254- 148 2,604,303 7/52 Grady. V 2,846,085 8/58 Johnson. 2,964,293 12/60 F0111. 2,969,220 1/61 Spencer. 0 3,058,602 10/62 Kilman. V

HUGO O. SCHULZ, Primary Examiner.

ERNEST A. FALLER, JR., MORRIS TEMIN,

Y Examiners. 

1. IN APPARATUS FOR POSITIONING BUILDING BOARD, A DOLLY, A VERTICAL MAST MOUNTED ON THE DOLLY, A TELESCOPING EXTENSION SLIDABLY MOUNTED FOR VERTICAL MOVEMENT IN SAID MAST, MEANS CARRIED BY THE MAST FOR RAISING AND LOWERING THE TELESCOPING EXTENSION, A SUBSTANTIALLY RECTANGULAR FRAMEWORK FORMING A FIRST BOARD SUPPORTING MEANS AND PIVOTALLY MOUNTED WITH RESPECT TO SAID TELESCOPING EXTENSION AND CARRIED AT THE UPPER END THEREOF FOR MOVEMENT BETWEEN A SUBSTANTIALLY VERTICAL POSITION AND A SUBSTANTIALLY HORIZONTAL POSITION, A SECOND BUILDING BOARD SUPPORTING MEANS HAVING AN ARM PIVOTALLY CONNECTED TO THE TELESCOPING EXTENSION AT A POINT SPACED FROM THE AXIS ON WHICH THE FRAMEWORK IS PIVOTALLY MOUNTED, COOPERATIVE ENGAGING MEANS CARRIED BY THE FRAMEWORK AND THE SECOND BOARD SUPPORTING MEANS SO THAT THE FRAMEWORK AS THE FRAMEWORK MEANS IS CARRIED WITH THE FRAMEWORK AS THE FRAMEWORK IS MOVED FROM A SUBSTANTIALLY VERTICAL POSITION TO A SUBSTANTIALLY HORIZONTAL POSITION TO THEREBY SUPPORT THE BOARD UNTIL THE WEIGHT OF THE BOARD IS TRANSFERED TO THE FRAMEWORK, THE COOPERATIVE MEANS BEING FORMED SO THAT IT AUTOMATICALLY RELEASES AT A POINT BEFORE THE FRAMEWORK REACHES A HORIZONTAL POSITION, AND LATCH MEANS FOR RETAINING SAID FRAMEWORK IN A SUBSTANTIALLY HORIZONTAL POSITION. 